EP1338733A1 - Lock cylinder - Google Patents

Abstract

The lock cylinder (1) has a mechanical closure (4) and an electrically controlled lock stop (5) mounted in a chamber (11) rotationally fixed to the lock core (2,3) which receives the closure. The peripheral dimension of the chamber of the lock cylinder, in the sense of the preset limited free rotation angle of the core under the action of a key, is greater than the dimension of the lock stop.

Description

The present invention relates to a lock cylinder according to the preamble of the main claim.

Lock cylinders of this type are made, for example EP-PS 0 324 096 known.

Although such locking cylinders in practice have proven themselves, it can be done with hasty operation this locking cylinder to problems with the electrically controllable Lock come as these relocate from their Closing in the release position takes a certain time.

To avoid these disadvantages, in view of the usual times to insert and turn the key in the range of 100 milliseconds, very fast working electronic assemblies used to make the pull the electrically controllable lock out of the lock engagement, so that subsequently the locking core of the locking cylinder can be rotated freely.

Such quickly responding modules are due to the always present inertia of the overall system including of the electric drives for the lock consuming and consuming also a lot of energy.

In any case, it must be ensured that the user a permitted key in the usual way Insert the locking cylinder quickly and then turn it immediately can, without having to fear that the lock by then has not yet been released.

It must therefore be avoided that after such Malfunction of the key removed and the closing process must be repeated.

The object of the invention is therefore one with a electrically controllable lock provided locking cylinder the known design so that the time to recognize the authorized key and to release the Lock cylinder with no perceptible delay for the user expires.

The invention solves this problem with the features of Main claim.

The advantage of the invention is that immediate after "any quick" insertion of the authorized user A rotational movement in the key Locking core can be initiated without being in the locked position located and not yet due to their inertia released lock already moved to the release position have to be.

This advantage is achieved in that the lock engagement between the lock and the lock pocket Free rotation angle is provided over which the locking core can be rotated for a certain period of time without the Lock is effective.

The one for turning the locking core when authorized Key available time can therefore be used for reading out the electronic key identifier and evaluating it and for the subsequent action to free the Take advantage of the lock, in which case the rotary movement of the Lock core may have been initiated without the user determine a corresponding obstruction of the rotary movement got to.

The principle of the invention is based on the knowledge that that the rotational movement of the Locking core despite "still" active lock the time to deactivate the lock in the range up to about 100 milliseconds lengthened so that the lock even at relatively low Switching currents can be activated sufficiently quickly.

The free rotation angle is at most that angle around which the locking core - and coupled with it the Lock bit - can be turned without the lock bit actuation of the lock bolt assigned to it is triggered Has.

Since actuation of the lock bolt in any case the free movement of the lock is to be the free turning angle limited accordingly.

This is conveniently done in that the Locked state when the maximum is reached Angle of rotation finds a stop on the lock pocket, so that then further rotation of the locking core is prevented unless the lock is released.

It was found that a free rotation angle in the order of magnitude up to about 75 ° is sufficient to use usual actuation cycles of such a locking cylinder to save about 70 to 80 milliseconds.

Taking into account that such locking cylinders both should be suitable for opening and closing the free rotation angle to both directions of rotation of the locking cylinder extend.

It is based on the basic position, which of the Lock core for inserting the key. In this Basic position exists between the lock and the lock pocket a relative position from which to each one of the two directions of rotation according to the present invention to extend.

Can the relative angular position between the lock bit and the key channel by turning the lock bit can change in any case sufficiently large free rotation angles can be achieved with one and the same locking cylinder, regardless of the question of whether the lock cylinder one Right or left lock should be assigned.

These angular positions are expediently in predetermined Adjustable angle steps.

For this purpose, examples of snap connections specified.

This is expediently used as a support for the lock bit a tube is provided, which rotates with the locking insert connected or at least connectable if necessary, the adjustment path for the lock bit from the tube circumference is formed. Blind holes come as a snap connection considered placed on the outer circumference of the tube and cooperate with a locking pin spring-loaded on the lock bit, that can be manipulated from the outside if necessary is that it can be moved to one of the blind holes.

If this tube is made of hardened steel, the result is there is the added benefit of violent intrusion in the housing of the lock cylinder, insofar as this is through the Pipe is shielded, extremely effective difficult becomes.

In addition, the tube enables a coupling to be accommodated between the locking insert and that component of the lock cylinder, in which the lock engages, so that also a mechanically suitable key, but it does does not have the necessary electronic identifier, not for violent overcoming the lock can be used since the intermediate clutch on the transmission of a Maximum torque is designed.

This maximum torque must be less than that for Overcoming the lock in the locked position is necessary Torque, for example by shearing.

Such a clutch can consist of a simple slip clutch consist or, for example, of a jump triggering clutch at a given maximum torque goes into rotation approval.

The invention is suitable for use on one side or lock cylinders that can be operated on both sides.

If double-sided lock cylinders are used, the clutch should also be operable on both sides, whereby in the coupling body is displaceable from the key tips Slider can sit, the length of which is the length of one fully inserted key tip smaller than that Length of the drive-side coupling body is.

With this measure it can be achieved that only one of the two sides of the lock cylinder by one Key can be applied, so that a mechanical matching key on one side of the locking cylinder, but the necessary electronic identifier missing, not one on the other side of the lock cylinder inserted key, both correct mechanical and also has the associated electronic identifier can misuse a rotary movement of the locking core.

Exemplary embodiments are given for this.

For more time to move the lock to its release position to achieve the electronic control as early as possible from the inserted key with a corresponding signal can be applied.

This is sensibly done by one in the front area of the locking cylinder arranged sensor that the insertion the key into the key channel of the cylinder core recognizes and reports this to the controller.

Mechanical pushbuttons are expediently used for this purpose, for example uses microswitches that have a Project the stylus into the key channel.

By inserting the associated key, the Stylus shifted from its detection position and the Microswitch activated accordingly.

Fig. 1 einen Schließzylinder dieser Erfindung in Seitenansicht,

Fig.2 die für den Freidrehwinkel maßgeblichen Bestandteile des Schließzylinders nach Fig. 1,

Fig.3 den Ausschnitt gemäß Fig.2 entsprechend der Ansicht III-III,

Fig.4 die Einbausituation gemäß Fig.3 mit Erreichen des maximalen Drehwinkels,

Fig.5 ein schematisches Weg-Zeit-Diagramm zur Darstellung der vorliegenden Erfindung,

Fig.6a Schließbartstellung für ein Rechtsschloß,

Fig.6b Schließbartstellung gemäß Fig.6a bei verdrehtem Schlüssel,

Fig.7a Schließbartstellung für ein Linksschloß,

Fig.7b Schließbartstellung gemäß Fig.7a bei verdrehtem Schlüssel,

Fig.8 Darstellung einer Rastverbindung zur Drehverstellung des Schließbartes,

Fig.9 Rastverbindung gemäß Fig. 8 in Blick der Richtung IX-IX,

Fig.10 Darstellung gemäß Fig.8 in gedrehter Stellung,

Fig. 11 Situation des im vorderen Bereich des Schließzylinders befindlichen Sensors,

Fig. 12a Kupplungskörper mit federbelastetem Schieber und Einrastverbindung zum außen liegenden Schließkern,

Fig. 12b Darstellung gemäß Fig. 12a in Ansicht von oben,

Fig. 12c Darstellung des antriebsseitigen Kupplungsstücks gemäß Fig.12a,12b in Aufsicht auf die Stirnseite.

The invention is explained in more detail below on the basis of exemplary embodiments. Show it:

1 is a side view of a lock cylinder of this invention,

2 the components of the locking cylinder according to FIG. 1 which are relevant for the free rotation angle,

3 shows the section according to FIG. 2 corresponding to view III-III,

4 shows the installation situation according to FIG. 3 when the maximum angle of rotation is reached,

5 shows a schematic path-time diagram to illustrate the present invention,

6a locking bit position for a right-hand lock,

6b lock bit position according to FIG. 6a with the key turned,

Fig. 7a lock bit position for a left lock,

7b lock bit position according to FIG. 7a with the key turned,

8 representation of a latching connection for the rotary adjustment of the locking bit,

9 latching connection according to FIG. 8 in the direction of IX-IX,

10 representation according to FIG. 8 in the rotated position,

11 situation of the sensor located in the front area of the locking cylinder,

12a coupling body with spring-loaded slide and snap connection to the outer closing core,

12b representation according to FIG. 12a in top view,

12c representation of the drive-side coupling piece according to FIGS. 12a, 12b in a view of the end face.

Unless otherwise stated below, the following description always for all figures.

The figures show a locking cylinder 1. It is about a profile cylinder. In the upper area of the profile cylinder a circular cross section is provided inside which is the locking insert. Here there is the locking insert from a stationary tube 3, within the stationary tube 3, the closing core 2 can rotate, provided the mechanical tumblers 4 by a mechanical access-authorized keys have been aligned accordingly are.

Furthermore, an electrically controllable lock 5 is provided, which engages in a lock pocket 11 to over the mechanical tumblers 4 additional security against to give unauthorized opening.

For this purpose, the locking pocket 11 is non-rotatable with the Locking insert 2,3 connected, so that a purely mechanically authorized Key, unless he is also the authorized user has electronic identifier, the lock cylinder 1 cannot operate.

However, if an access-authorized key 12 in introduced the key channel 13, so the mechanical Tumblers 4 shifted so that their parting lines with the The joint between the closing core 2 and the stationary pipe 3 coincide, while at the same time using the electronic identifier the communication between the active transceiver element 9 and the passive receiver-transmitter element 10 queried and is evaluated by the electronics module 7.

The electronic module 7 provides the access-authorized identifier of the key 12 is fixed, so a corresponding signal given to the motor 6, which is acted upon by the current source 8, the electrically controllable lock 5 from its lock pocket 11 free, so that the lock cylinder 1 can be operated.

Since between the key channel 13 and the lock bit 14th a non-rotatable connection is given, the Closure bit 13 the associated in a conventional manner Apply lock bolt and this according to the respective Open or close the direction of rotation of the locking bar.

It is now essential that the locking pocket 11, in the circumferential direction seen, has a dimension that the so-called Free turning angle allows before the lock 5 in the sense a rotation prevention lock operates.

3 shows in particular that the lock pocket lies in the radial plane in which the lock 5 is also arranged is and in this radial plane over a predetermined Circumferential angle extends so that a relative movement between the lock pocket 11 and that in the lock pocket engaging lock 5 is possible.

Due to the circumferential extent of the barrier pocket 11 therefore allows a free rotation angle 15 or 16, by which the component on which the locking pocket 11 is attached is, can twist before the lock its locking function Fulfills.

If the free rotation angle 16 is fully utilized in accordance with FIG. 4, the lock 5 strikes against the end of the lock pocket 11 on, so that in this rotational position only now Lock 5 becomes mechanically effective.

In the exemplary embodiments shown is without limitation the invention thereupon a free rotation angle 15 or 16 realized by about 75 °.

In addition, Figure 3 shows in particular that the free rotation angle 15 and 16 in both directions of rotation of the closing core 2 extends, that is, both for the rotation of the locking core clockwise as well as counterclockwise an unobstructed Allows rotation.

In addition, it is realized here that the free rotation angle 15 and 16 in both directions of rotation essentially extends equally far.

The effect of this free rotation angle is best explain with reference to Fig.5.

Fig. 5 shows a path-time diagram (qualitative) with the typical course of a closing process.

The key insertion phase I typically lasts 70 to 80 milliseconds. This is followed by a pause phase II of typically about 40 to 50 milliseconds. After that is done the rotation of the key in phase III of typically about 70 to 80 milliseconds.

However, phase III can only be initiated if the lock 5 has been pulled out of its lock pocket 11 is, unless measures according to the present invention are provided.

According to this, in the lock cylinders common today the electronic control 7 only in the phases I and II available times available to the Unlock lock 5.

Thanks to the present invention, this period of time however extended for a period in which the not yet pulled out lock 5 within the free rotation angle 15 and 16 engages in the barrier pocket 11.

In any case, this time saving is sufficient to prevent malfunctions to avoid the lock cylinder 1, which then arise could, if the Phases I and II have not yet been unlocked is.

The free rotation angle 15 or 16 is dimensioned here so that when the maximum twist angle reached by the stop the lock 5 realized at the end of the lock pocket 11 is not yet a gear contact of the lock bit 14 in the sense of a displacement of the lock bolt (not shown) is done.

As shown in FIGS. 1 and 2 in particular, there is one gear coupling between the locking insert 2,3 and the tubular component 22, on the outer periphery of the lock pocket 11 is provided.

This gear coupling is due to each other aligned key channel sections 13a, 13b, shared by the fully inserted key 12 be charged.

The lock bit is non-rotatably connected to the tube 22 14, so that on the gear coupling between the Key channel sections 13a, 13b of the lock bit 14 inevitably is rotated as soon as the lock 5 has been released is.

However, there is a relative angle according to FIGS. 6a to 7b 17 between the key channel 13; 13a, 13b and Lock bit 14, the embodiment of the invention with each a free rotation angle to one of the two directions of rotation should also take into account the fact that within this Angular range of the lock bit 14 regardless of use of the lock cylinder for right-hand locks (Fig.6a, 6b) or for left-hand locks (Fig.7a, 7b) geared contact with should avoid the lock bolt (not shown).

For this purpose, the relative angular position 17 is between the lock bit 14 and the key channel 13 through the possibility changeable to twist the lock bit 14.

As shown in FIGS. 8 to 10 in particular, this is the Lock bit can only be rotated in predetermined angular steps.

The striker sits here on the tube 22 and is over a snap-in connection 18 is connected to the locking core 2 in a rotationally fixed manner.

Here, the snap-in connection 18 consists of a sprung Spring detent pin 19 in a blind hole 20 of the tube 22 intervenes.

For this purpose, the locking pin 19 is seated in the lock bit and has an incision 21 which with one of externally accessible opening 35 in the lock bit combs and on this way from a pin inserted into the opening 36 or similar can be used.

It can be understood that the person under attack Lock pin 19 against the bias of the spring acted upon him can be raised, so that subsequently by simple Rotation of the tube 22 of the lock bit 14 in another Is rotatable relative to the key channel 13.

There is therefore an adjustment path on the circumference of the tube 22 for the lock bit 14 on which the lock bit 14 through the two predetermined blind holes 20 on the outer circumference of the tube 22 is permanently fixable.

If the tube 22 is made of hardened steel, can additionally achieve that the electronic control 7, which is located on the inside 29 of the door, from the outside is practically no longer manipulable.

Even if it succeeded, the one on the outside 30 remove the closing insert 2, 3 located on the door, nevertheless, the lock 5 remains in engagement with its lock pocket 11 and is through the upstream pipe 22, which preferably consists of hardened steel, not easy either accessible.

In addition, it is fulfilled here that the tube 22 is one of Locking insert 2.3 is an independent component and that inside a torque-transmitting coupling 23 of the tube sits, the drive-side coupling body 24 of the Tip of the inserted key 12 is applied, wherein the lock 5 on the outer circumference of the tube 22 in there provided lock pocket 11 engages. Additionally met the tube 22 here the task of the output-side coupling body due to the non-rotatable connection to the lock bit 14.

This embodiment of the invention allows the Dimension clutch 23 so that when a predetermined maximum torque goes into rotation enable.

This can be done, for example, using a simple combination of static friction happen or also via a preloaded coupling driver, which sits on the drive side of the clutch and engages in a pocket on the driven side of the clutch.

When a specified maximum torque is exceeded the clutch driver is then shifted so that it no longer fulfills its driver function by jumping suddenly triggers.

1 shows a locking cylinder, which can be closed on both sides.

In a manner known per se, such a locking cylinder fixed with the faceplate screw 31 in the lock, so that a Half of the lock cylinder to the inside 29 and the other Half of the lock cylinder facing the outside 30 of the door are.

In this case, it is advisable to use a clutch 23 use that can also be used on both sides, however additionally has to fulfill the function that only a single one of the two keys 12 at the same time May actuate lock cylinder 1.

For this purpose, a slide 25 is provided here in an axial slot 26 of the drive-side clutch body 24 runs, the length of the slide by the length 37 the inserted key tip is smaller than the length of the drive-side coupling body 24 is.

One can now easily understand, in particular with reference to FIG. 1, that the key is fully inserted moved the slide so that another key on the opposite side of the lock cylinder 1 not more can be inserted.

This measure serves in particular to avoid that a mechanically permissible key only inserted on the opposite side of the lock cylinder mechanically and electronically permissible keys can misuse to release the lock 5 to open to gain access this way.

This case is of particular relevance if one is lost Access-authorized key, which is in the electronics module 7 locks, so that he the electrically controllable Lock can no longer operate, but still before the relevant mechanical tumblers "without authorization" is able to align.

In particular, to avoid unauthorized use of violence Therefore, the clutch 23 makes sense to avoid the lock 5, which is due to the electronically locked Key 12 is inserted into her lock pocket, mechanically overloaded and overcome in this way.

Particularly advantageous embodiments of this clutch result from the same time as the present application filed application of the same applicant, to which with regard to all not mentioned in the present application Features are expressly referred to.

Due to the mutual exclusion function that the Slider 25 realized in the coupling body 24 are to both A pocket 27 is provided in each end face in the coupling body 24, in which only one of the two key tips can intervene (see for example Fig.1).

In addition, Fig. 12a shows a further development, at which the slide 25 in the coupling body 24 by a spring 28 is so acted that he with the key removed on the outside 30 of the door with the outer closing core 2 is engaged. The snap-in connection 39 serves this purpose between the end of the slide 25 and a recess in Lock insert 2,3. The insert connection is used for fixation of the lock bit in its end position when standing vertically Key channel, however, can be found on the inside the key inserted in the door, as the Pocket 27 on this side of the lock cylinder 1 longer than the key tip inserted there is and thus the Slide 25 the necessary for lifting out of the locking engagement Hub allowed.

Such a lock cylinder 1 has a priority function for the externally inserted key 12 and can be from the inside 29 of the door also with an authorized user Do not use the key. If on the outside one Key is inserted.

Furthermore, in particular Fig. 1 shows that the front on Lock cylinder 1 a reading coil 9 for wireless communication with a communication element attached to the key 12 10 is provided. Here is what is provided on the key 12 Communication element 10 as a passive receiver-transmitter module formed by the active transceiver module 9 of the lock cylinder 1 receives a signal, this due to the energy supplied and that in the module 10 stored code so that the coded signal can be transmitted back to the module 9 to the Control 7 can be transmitted.

In this regard, reference is made to the prior art (Transponder).

In addition, FIGS. 1 and 11 in particular show the arrangement a sensor 32 in the vicinity of the reading coil 9, which is used for detection of a key 12 at the moment when it is in the key channel 13 is inserted. The sensor 32 is therefore an upstream element to ensure that when you insert the Key of the electronic control 7 to notify that in Shorten the review of the authorized electronic Identifier that is in module 10 on the key and in the Control 7 is stored, has to be done.

Due to the upstream element is therefore possible early the electronic circuit for relocating the Lock 5 activated in case of an authorized key (mechanical and electronic) the lock 5 as early as possible to be able to pull out of their locking engagement.

It is understood that in the cylinder readable on both sides in a sensor 32 is arranged on each cylinder side.

This measure is therefore particularly useful in combination with the free rotation angle 15; 16 additionally the Gaining time to deactivate the lock as early as possible 5th

This is a microswitch 33 which a stylus 38 protruding into the key channel 13 has, the end of the stylus 38 from the key tip relocated and the displacement path to the microswitch 33 is abandoned for an intended switching function.

In the exemplary embodiments shown, the lock 5 powered by an electric motor. An electric motor is used for this 6, which moves the lock 5 back and forth via an eccentric, if he has the corresponding signal via the controller 7 receives.

However, for the sake of completeness electromagnetic barrier drive of the invention includes by means of which the lock 5 is electromagnetic can be moved back and forth.

The basic position can also expediently be provided of the locking core 2, in which the key is complete can be inserted through a spring-loaded catch 34 to fix. The spring-loaded catch 34 is supported here between the housing of the lock cylinder 1 and the rotatable Components of the locking cylinder, here a ball-spring catch is provided in a on the circumference of the tube 22 introduced recess engages.

Reference symbol line-up

1

lock cylinder

2

lock core

3

stationary pipe

4

mechanical guard locking

5

electrically controllable lock

6

engine

7

Electronics module, control

8th

power source

9

active transceiver, reading coil

10

passive receiver-transmitter, coding module

11

lock bag

12

key

13

keyway

13a

outer key channel section

13b

inner key channel section

14

Cam

15

Free turning angle, first direction of rotation

16

Free rotation angle, second direction of rotation

17

Relative angle between 13 and 14

18

snap

19

Plunger

20

blind

21

incision

22

pipe

23

clutch

24

drive-side coupling body

25

pusher

26

axial slot

27

bag

28

feather

29

Inside of the door

30

Outside of the door

31

fixing screw

32

sensor

33

microswitch

34

spring-loaded catch

35

opening

36

pen

37

Length of the inserted key tip

38

feeler

39

snap

Claims (26)

Lock cylinder (1) with mechanical tumblers (4) and with an electrically controllable lock (5), in the closed position
the tumblers (4) in mutually assigned bores of the locking insert (2, 3) which are brought into aligned positions with one another, and
engage the lock (5) in a lock pocket (11), which is non-rotatably connected to the locking insert (2, 3), and so on
with regard to the rotational mobility of the locking core (2) act to prevent rotation and be shifted into the release position by means of an authorized key (12) in the key channel (13) in such a way that the locking core (2) together with the locking bit (14) via the key channel (13) can be rotated to shift an associated lock bolt, the lock pocket seen in the circumferential direction has a certain play for the retracted lock, characterized in that measured in the circumferential direction, the dimension of the lock pocket (11) in the sense of a predetermined limited free rotation angle (15; 16) of the by an access-authorized key (12) actuated locking core (2) is larger than the dimension of the lock (5), that during the typically present phases of a normal locking operation, in which the lock (5) is also moved into its release position, namely the Insertion phase I, the pause phase II and the key turning phase III,
the lock (5) remains in contact-free contact with the ends of the lock pocket (11), especially during the key turning phase III, if it has not yet been completely shifted into its release position. Lock cylinder (1) according to claim 1, characterized in that the free rotation angle (15; 16) is limited by the stop of the lock (5) at the end of the lock pocket (11). Lock cylinder (1) according to claim 1 or 2, characterized in that the free rotation angle (15; 16) - viewed from the basic position of the locking core (2) for inserting the key (12) - is approximately 75 ° until the stop is reached. Lock cylinder (1) according to one of claims 1 to 3, characterized in that the free rotation angle (15; 16) to both directions of rotation of the locking core (2) - from the relative position between the lock (5) and the lock pocket (11) in the basic position of the Locking core (2) for inserting the key (12) viewed - extends. Lock cylinder (1) according to claim 4, characterized in that the free rotation angle (15; 16) extends to the same extent in both directions of rotation. Locking cylinder (1) according to one of claims 1 to 5, characterized in that the free rotation angle (15; 16) is so limited that when the maximum rotation angle is reached there is still no gear contact of the locking bit (14) for moving the lock bolt. Locking cylinder (1) according to one of Claims 1 to 6, characterized in that the relative angular position (17) between the locking bit (14) and the key channel (13) can be changed by turning the shooting bit (14). Lock cylinder (1) according to claim 7, characterized in that the lock bit (14) can only be rotated in predetermined angular steps. Lock cylinder (1) according to claim 9, characterized in that the predetermined angular steps are predetermined by snap-in connections (18) between the lock core (2) and the lock bit (14). Lock cylinder (1) according to claim 9, characterized in that the latching connections (18) are formed from a pairing between a spring-loaded latching pin (19) and a plurality of associated blind holes (20) which lie on the adjustment path of the latching pin (19). Lock cylinder (1) according to claim 10, characterized in that the locking pin (19) sits in the lock bit (14) and has an incision (21) which meshes with an externally accessible opening (35) in the lock bit (14) and that of a pin (36) inserted into the opening (35) can be gripped behind. Locking cylinder (1) according to claim 10 or 11, characterized in that the locking bit (14) sits on a tube (22) which is connected or connectable in a rotationally fixed manner to the locking insert (2; 3) and that the adjustment path is formed by the circumference of the tube , in which the blind holes (20) are made. Lock cylinder (1) according to claim 12, characterized in that the tube (22) consists of hardened steel. Locking cylinder (1) according to claim 12 or 13, characterized in that the tube (22) is a component which is independent of the locking insert (2; 3) and that in the interior of the tube (22) there is a torque-transmitting coupling (23), the drive side of which Coupling body (24) is acted upon by the tip of the inserted key (12) and that
the lock (5) engages in a lock pocket (11) attached to the outer circumference of the tube (22), the tube (22) being the clutch output side. Lock cylinder (1) according to claim 14, characterized in that the clutch (23) goes into rotation release when a predetermined maximum torque is exceeded. Lock cylinder (1) according to claim 15, characterized in that the clutch (23) is triggered in a step-by-step manner. Locking cylinder (1) according to one of Claims 14 to 16, characterized in that the locking cylinder (1) can be closed on both sides via a coupling (23) which can be actuated on both sides and that a slide (25) which can be displaced from the key tips is seated in the coupling body (24) , the length of which is less than the length of the drive-side coupling body (24) by the length of a fully inserted key tip. Lock cylinder (1) according to claim 17, characterized in that the slide (25) runs in an axial slot (26) of the coupling body (24). Lock cylinder (1) according to claim 17 or 18, characterized in that a pocket (27) is inserted in the coupling body (24) on both ends, in which the respective key tip can engage. Lock cylinder (1) according to one of Claims 17 to 19, characterized in that the slide (25) in the coupling body (24) is acted upon by a spring (28) in such a way that when the external key (12) is removed, it is connected to the outer locking core (2 ) is engaged. Lock cylinder (1) according to one of claims 1 to 20, characterized in that a reading coil (antenna) (9) for wireless communication with a communication element (10) attached to the key (12) is provided on the front side of the lock cylinder (1) and in that in each case In the vicinity of the reading coil (antenna) (9) there is a sensor (32) which detects the insertion of the key (12) into the key channel (13) of the locking core (2) and this to the controller (7) to initiate the reading process reports the electronic identifier on the key. Lock cylinder (1) according to claim 21, characterized in that a microswitch (33) in combination with a stylus (38) protruding into the key channel (13) is provided as the sensor (32). Lock cylinder (1) according to one of claims 1 to 22, characterized in that the lock (5) is moved electromagnetically in the locked position. Lock cylinder (1) according to one of claims 1 to 22, characterized in that the lock (5) can be moved by an electric motor. Lock cylinder (1) according to one of claims 1 to 24, characterized in that the lock cylinder (1) can be closed on both sides and that the lock (5) sits on the inside (29) of the lock cylinder (1) which can be closed on both sides. Lock cylinder (1) according to one of claims 1 to 25, characterized in that the basic position of the locking core (2), in which the key (12) can be fully inserted, is fixed by a spring-loaded catch (34) which is located between the The housing and the rotatable components (2; 22) of the locking cylinder (1) are supported.

Images